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Help Wanted The buggy result of a AlphaTest (with shadow) Shader

Discussion in 'Shaders' started by NMotome, Apr 27, 2021.

  1. NMotome

    NMotome

    Joined:
    Feb 20, 2020
    Posts:
    7
    Hey there,

    I downloaded model and textures from DOTA2 and wrote a shader for it. Everything goes right except for the shadow.

    I learned that if I want to add shadow in an AlphaTest shader, I will need to add a "_Cutoff " and a "_Color" property, and set the FallBack to "Legacy Shaders/Transparent/Cutout/VertexLit".

    I did that. However something wired just happend. Actually I don't know how to describe that properly...

    Here are some clues:
    1. The shadow will disappear when I push down the mouse button (like drag and rotate)
    2. The shadow reappears after I release the button for a while. And I can see some noise if I take a closer look.
    3. I can see the model (just a contour) behind it if I hold down the mouse button, just like being some what transparent.
    4. The model become opaque again when I release the button.
    5. If the "_Cutoff " property is commented, ALL of the above will GONE.

    I'm just going to go mad about this stuff... I have an another shader from internet that goes well with AlphaTest & shadow & _Cutoff, but I just don't know what made all these happened...

    Help, and thanks. QWQ
     
    Last edited: Apr 27, 2021
  2. NMotome

    NMotome

    Joined:
    Feb 20, 2020
    Posts:
    7
    I upload a video on YouTube.
    If someone curious about what happened on earth, go have a look...
     
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